Pandas read_csv() does not recognize escaped quotechar as escaped

Code Sample, a copy-pastable example if possible

Take a csv file with this content:

A B C D
128.0.0.0 "GET /get-stuff-55/static/get-stuff/index.html?la=en HTTP/1.1" 200 7765
128.0.0.0 "GET /get-stuff-55/static/get-stuff/index.html?la=en HTTP/1.1" 200 7765
128.0.0.0 "GET /get-stuff-55/static/get-stuff/index.html?la=en'\" HTTP/1.1" 200 7765

Problem description

Try to read it using:

import pandas as pd
df = pd.read_csv("quotechartest.csv",quotechar="\"",sep=' ')

Expected Output

This leads to this error:

ParserError: Error tokenizing data. C error: Expected 4 fields in line 4, saw 5

The quotechar " in the file is escaped but read_csv does not recognize it as escaped which leads to the error message.

Output of pd.show_versions()

python: 3.6.1.final.0
python-bits: 64
OS: Windows
OS-release: 10
machine: AMD64
processor: Intel64 Family 6 Model 79 Stepping 1, GenuineIntel
byteorder: little
LC_ALL: None
LANG: en
LOCALE: None.None
pandas: 0.20.2

Comment From: chris-b1

You can specify an escape character with the escapechar parameter.

from io import StringIO

pd.read_csv(StringIO(r"""A B C D
128.0.0.0 "GET /get-stuff-55/static/get-stuff/index.html?la=en HTTP/1.1" 200 7765
128.0.0.0 "GET /get-stuff-55/static/get-stuff/index.html?la=en HTTP/1.1" 200 7765
128.0.0.0 "GET /get-stuff-55/static/get-stuff/index.html?la=en'\" HTTP/1.1" 200 7765"""), sep=' ', quotechar='"', escapechar='\\')
Out[4]: 
           A                                                  B    C     D
0  128.0.0.0  GET /get-stuff-55/static/get-stuff/index.html?...  200  7765
1  128.0.0.0  GET /get-stuff-55/static/get-stuff/index.html?...  200  7765
2  128.0.0.0  GET /get-stuff-55/static/get-stuff/index.html?...  200  7765